walked to his at lake michigan. >> you don't have to come pay for gas to come to the beach close to my house. >> reporter: if history is any indication gas prices typically ease by mid-september when the summer driving season is over. cynthia bowers, cbs news, chicago. >> mitchell: and an alarming moment at the u.s. open today for spain's rafael nadal talking with reporters shortly after his third round victory. nadal was stricten by painful leg cramps. and at one point even slid off his chair to the floor. after treatment he recovered and continued his news conference. later, not funny. comedian sound off after the show goes on without jerry lewis. that story is next. with alzheimer's disease. at's how it s she needs help from me. and her medication. the exelon patch -- it releases medication continuously for twenty-four hours. she uses one exelon patch daily for the treatment of mild to moderate alzheimer's symptoms. [ female announcer ] it cannot change the course of the disease. hospitalization and rarely death have been reported in patients who wore more than one patch at a time.